# Seaside Buoy vs Satark

The clearest difference is in-app purchases: Satark at none against Seaside Buoy's 4. Satark also leads on ads (none vs shown). Seaside Buoy's advantage is update cadence (every 3 weeks vs every 3 months) and iOS requirement (11.0 vs 13.0). On price and device support there is nothing between them.

Both are free to download. Seaside Buoy sells 4 one-off in-app purchases. Satark asks for nothing beyond the download.

Seaside Buoy ships an update every 3 weeks, Satark every 3 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Seaside Buoy | Satark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (903 ratings)](https://appshunter.io/ios/app/seaside-buoy/id1240094859/reviews)** | — |
| Number of ratings | **903** | — |
| Positive reviews | 55.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 23 MB | 243 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ENC Data](https://appshunter.io/developer/1240094858) | [Rimes](https://appshunter.io/developer/1470204756) |

## What reviewers say

### Seaside Buoy

[App page](https://appshunter.io/ios/app/seaside-buoy/id1240094859)

Access live scientific data from ocean buoys globally. View water temperature, swell height, and more from public scientific organizations. Features include automatic closest buoy selection, map browsing, favorites, and distance/bearing calculations.

**Highlights:** Live buoy data worldwide, Water temperature and swell height, Automatic closest buoy selection, Map and list browsing, Favorite buoys, Distance and bearing to buoy

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |

**What reviewers like**

- 🙏 Thanks
- 👍 Great app and useful
- 👍 Very well built and extremely useful
- 👍 So useful!
- 👍 Real information, what a concept!

**What reviewers complain about**

- ⚠️ Doesn't track where you are
- 🙄 Nag nag nag
- 😕 Accurate info - I just don't care what the ride was 4 days ago!
- ⚠️ Stopped working June-2023
- ⚠️ Illegible print

**Reported bugs**

- Graph view doesn't render properly
- Crashes every time tried using it
- Stopped loading buoy data suddenly

**Requested features**

- Add swell info
- Add Celsius temperature display


### Satark

[App page](https://appshunter.io/ios/app/satark/id1470204757)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Seaside Buoy free?

Seaside Buoy is free to download, with in-app purchases available.

### Is Satark free?

Satark is free to download, with no in-app purchases.

### Do Seaside Buoy or Satark have ads?

Seaside Buoy shows ads; Satark does not.

### Which is updated more often, Seaside Buoy or Satark?

Seaside Buoy ships an update every 3 weeks, and Satark every 3 months. Most recently, Seaside Buoy was updated on October 29, 2026 and Satark on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*